Agilent Technologies E4438C Manual

2
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Software Overview
This application note is a self-guided tutorial describing the test signals that can be created
with the Signal Studio for Bluetooth software. This document is not meant to be a
Bluetooth technology tutorial. Basic knowledge of the Bluetooth radio specification is
required. For additional information on Bluetooth technology, refer to the References
section at the end of this document.
Software Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Ease of Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Signal Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Bluetooth modulation and transmission parameters . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Bluetooth transmission scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Bluetooth link types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Bluetooth packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Connecting to the ESG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Creating Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Step 1 - Configure the Bluetooth signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Step 2 - Setup the signal generation parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Step 3 - Configure the ESG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Step 4 - Calculate and download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Basic Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Receiver measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
ESG BER analysis capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
BER measurements setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
BER measurements example – clock/gate delay calibration . . . . . . . . . . . . . . . . . . .38
Signal Studio for Bluetooth Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Acronym List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Additional Literature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Recommended Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
The Signal Studio for Bluetooth software is an intuitive Windows
®
-based tool for config-
uring Bluetooth packets and Bluetooth modulated data streams. The software calculates
an I/Q waveform file based on the Bluetooth signal configuration parameters set by the
user. Most waveforms take only a few seconds to build. The waveform file can then be
downloaded to the ESG internal baseband generator for playback in arbitrary waveform
mode.
In addition to creating waveform files, the software provides configuration menus for key
signal generator settings, including frequency and amplitude. The instrument settings,
along with the I/Q waveform file, are passed to the ESG over the LAN or GPIB interface.
After downloading the waveform file and instrument settings to the signal generator, it
automatically begins generating the Bluetooth modulated RF signal. Local control of the
signal generator is then re-enabled and instrument settings, like frequency and amplitude,
can be modified from the ESG front panel. The waveform files cannot be modified once
they have been downloaded to the instrument.
The waveform files can be saved in the ESG non-volatile memory and recalled for
playback at any time. In addition, the Signal Studio software configuration can be
saved to the host computer’s local hard drive and recalled at any time to re-calculate
and download the waveform to the signal generator for playback.
Table of Contents

Agilent Technologies E4438C Specifications

General

Brand	Agilent Technologies
Model	E4438C
Category	Portable Generator
Language	English